Storage capacitor with hole and liquid crystal display using the same

Abstract

A liquid crystal display includes a plurality of pixel regions ( 3 ), each of which includes a substrate portion ( 39 ) and a storage capacitor ( 37 ) arranged on the substrate portion. The storage capacitor includes a first capacitor electrode ( 38 ), an insulating layer ( 36 ) formed on the first capacitor electrode, and a second capacitor electrode ( 34 ) positioned on the insulating layer. At least one through hole ( 380 ) is arranged in at least one of the first and second capacitor electrodes. With the edge effect of the through hole(s) of the capacitor electrode(s), the capacitance of the storage capacitors can be increased significantly. Therefore, each of the storage capacitors can have a high capacitance without reducing the aperture ratio of the liquid crystal display.

1 . A storage capacitor, comprising: 
 a first capacitor electrode;    an insulating layer formed on the first capacitor electrode; and    a second capacitor electrode positioned on the insulating layer;    wherein at least one of the first and second capacitor electrodes comprises at least one through hole.    
   
   
       2 . The storage capacitor as recited in  claim 1 , wherein at least one of the first and second capacitor electrodes further comprises a plurality of protrusions.  
   
   
       3 . The storage capacitor as recited in  claim 1 , further comprising a plurality of gaps provided at one edge of at least one of the first and second capacitor electrodes.  
   
   
       4 . The storage capacitor as recited in  claim 1 , wherein the first and second capacitor electrodes are made of a same material.  
   
   
       5 . The storage capacitor as recited in  claim 4 , wherein the first and second capacitor electrodes are made of a transparent conductive material.  
   
   
       6 . The storage capacitor as recited in  claim 5 , wherein the first and second capacitor electrodes are made of indium tin oxide and/or indium zinc oxide.  
   
   
       7 . A liquid crystal display comprising a plurality of pixel regions, each of which comprises a substrate portion and a storage capacitor arranged on the substrate portion, the storage capacitor comprising: 
 a first capacitor electrode;    an insulating layer formed on the first capacitor electrode; and    a second capacitor electrode positioned on the insulating layer;    wherein at least one through hole is arranged in at least one of the first and second capacitor electrodes.    
   
   
       8 . The liquid crystal display as recited in  claim 7 , wherein at least one of the first and second capacitor electrodes further comprises a plurality of protrusions.  
   
   
       9 . The liquid crystal display as recited in  claim 7 , further comprising a plurality of gaps provided at one edge of at least one of the first and second capacitor electrodes.  
   
   
       10 . The liquid crystal display as recited in  claim 7 , wherein the first and second capacitor electrodes are made of a same material.  
   
   
       11 . The liquid crystal display as recited in  claim 10 , wherein the first and second capacitor electrodes are made of a transparent conductive material.  
   
   
       12 . The liquid crystal display as recited in  claim 11 , wherein the first and second capacitor electrodes are made of indium tin oxide and/or indium zinc oxide.  
   
   
       13 . The liquid crystal display as recited in  claim 7 , wherein each pixel region further comprises a second insulating layer formed on the second capacitor electrode.  
   
   
       14 . The liquid crystal display as recited in  claim 13 , wherein each pixel region further comprises a pixel electrode positioned on the second insulating layer.  
   
   
       15 . The liquid crystal display as recited in  claim 14 , wherein the pixel electrode is connected to the second capacitor electrode at a contact hole formed in the second insulating layer.